cnes program status - home: aviso

CNES program status

E. Thouvenot, CNESNovember 2008

CNES program status – OST-ST meeting - NIce - November, 20082

CNES Strategy in Oceanography

• Contribute to operational outcome of altimetry :TOPEX/POSEIDON => JASON1 => JASON2/OSTM =>JASON3ERS 1 & 2 => ENVISAT => SENTINEL3

+ CORIOLIS, MERCATOR/COO...

• Continue research activities for future altimetry missions/instruments (AltiKa, WSOA, Water/SWOT,…)

• Contribute to space measurements of other ocean physical parameters :

- salinity : SMOS, CNES contribution to ESA project - directional wave spectrum (SWIM/CFOSAT)- ocean colour (SSO or GEO)

• Prepare ocean applications of ORFEO (Cosmo SkyMed/Pleiades) : mainly coastal applications


TOPEX/POSEIDON (CNES/NASA)

LauncherDORIS & POSEIDON

Mission Center

Reference missionOcean Large scale

Earth reference system

SPOT2 (CNES)DORIS

SPOT3 (CNES)DORIS

SPOT4 (CNES)DORIS

SPOT5 (CNES)DORIS

1990

2000

Jason-1 (CNES/NASA)Satellite bus

DORIS & POSEIDONControl & Mission Center

ERS-1 (ESA)Altimeter algorithm

ENVISAT (ESA)DORIS

Altimeter ProcessingArchive & distrib.

ERS-2 (ESA)

experiment

operational

CRYOSAT2 (ESA)DORIS

Jason-2 / OSTM(CNES/NASA/EUMETSAT/NOAA)

Satellite busDORIS & POSEIDON

Control & Mission Center

ALTIKA/SARAL(CNES/ISRO)

Altimeter, radiometer,DORIS, Lra

Process, archive & distrib.

SALP : Altimetry and precise positioning service

MERCATOR : assimilation, forecastCNES / SHOM / METEOFRANCE / IFREMER / CNRS / IRD

PLEIADES (CNES)DORIS

2005CRYOSAT (ESA)DORIS

2010

HY-2 (CNSA)DORIS

CNES involvment in altimetryComplementing mission

mesoscale, ice

Sentinel-3A (ESA)DORIS


Status of altimetry missions/activities

■TOPEX/POSEIDON :Stopped after more than 13 years of ocean observations

■ Jason1: in extended mission, fully operational■ENVISAT

excellent synergy with Jason1 (T/P and ERS complementarity further improved)■DORIS

6 DORIS receivers simultaneously in flight : earth reference system strengthened■MERCATOR

inter Agency structure for the implementation of an oceanographic forecasting center in Europe in the mid term (GMES Marine Core Service); leader of MyOcean (EC-FP7 program)

■AltiKa/SARAL : in development phase. Launch possible from mid-2010.■SALP/SSALTO/AVISO : multi-mission ground segment■Sentinel3A : agreement with ESA to embark DORIS■HY-2A : agreement with CNSA to embark DORIS

■Next Step : possible contribution to SWOT (TBD)


AVISO Data user teams


Jason1

■Qualified in orbit■Operational mission underway■Products distributed routinely■CNES operations funded through SALP■Required lifetime : 3 years (achieved in

december, 2004)■Extended mission: 5 years (achieved in

december, 2006)■Extension agreement for 5 more years of

operation signed between CNES & NASA on december, 2006


Jason2/OSTM

■ Cooperative Framework between NOAA/NASA/EUMETSAT/CNES

Core mission : continuation of Jason1Technological passengers to enhance DORIS performance (CARMEN2/LPT, T2L2)

■ Launched on june 20, 2008

■ Close tandem mission with Jason-1

■ Cal/Val in progress


SARAL/AltiKa

■ Program approved on december, 2005Altimetric Gap filler between ENVISAT & SENTINEL3Research oriented mission :

- new, higher frequency, greater performance- potential new applications on ice, land, coastal areas

…but with a consolidated architecture : conventional altimeter

■ Cooperative framework : CNES/ISROConfirmation of CNES&ISRO cooperation on this new baseline obtained on December 2006 : SARAL mission (Satellite with ARgos & ALtika)CNES/ISRO MOUs signed in february, 2007Tentative launch date : mid- to end-2010

■ Data policy : ~ the same as JASON missions (through CNES/ISRO RAs)Next India/France scientific workshop on 3-5 december in AhmedabadInternational Research Announcement planned in 2009


Status of altimetry programs

91 92 93 94 95 96 97 98 99 00 01 02 03 04 05

RA/ERS-1

ERS/GFO

05 06 07 08 09 10 11 12 13 14 15 16 17 18 19

On going mission EUM managed mission pending approval

Post-Jason

HY-2A

Envisat

Approved mission GMES mission

Jason-3 ? Jason-CS ?

Mission Pending Approval DoD managed mission pending approval

66° inclination

High inclination

Jason-1

Sentinel 3

NPOESS GFO-FO?

Jason-2

AltiKa/SARAL

CRYOSAT2

SWOT


DORIS

Next Steps

■HY-2A : CNES/CNSA discussions underwayPayload : Dual frequency altimeter, nadir 3-frequency radiometer, 5-frequency scanning radiometer, scanning scatterometer, +DORIS/GPS/LRAOrbit : SSO 6am-6pm, 14 days (after 1-year geodetic mission)Launch : june 2010

■ JASON3 : (Cnes position)Operational mission : not supposed to be funded by R&D agenciesNOAA/EUMETSAT cooperation with EC, CNES & NASA (TBC) contributionsCNES in-kind contribution : Proteus platform and project team equivalent to JASON/OSTM (i.e. about one third of European part of the program)Launch : mid-2013 ?

■ and contributions to ESA/EC missions : Cryosat2, Sentinel3


Surface Water & Ocean Topography (SWOT)

•Mission combining research needs associated to hydrology and oceanography :

- mapping of water level for rivers, lakes, and oceans (including coasts)

•Principle : Wide-swath interferometric, Ka-band altimeter

•Recommended by the US Decadal Survey

•Submitted in the frame of the Cnes Scientific Prospective Seminar (march, 2009)

•Cooperation scheme : TBD (NASA/CNES/…)

•Phase 0 in 2007, pre-phase A & phase A in 2008/2009

•Launch possible in ~2016


In Memoriam

To Yves Ménard

cnes program status - home: aviso

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